Excel cell data

Question

my query is:

I have to map the excel cell value to database, not the whole excel file this is simple ok.. but how can i map specific cell with database column?

my effort: 

i have retrieved all the data from excel sheet by "Select * from [Sheet1$]";

and then stored in dataset(ds) , so can i retrieve particular value from cell by this one 

+ds.Tables[0].Rows[0]["ExcelColumn"]+

 

or should i map each cell by indexing like [2,4],[2,6] etc 

 

 pls guide asap..

 

Thankyou guys!